iPad 3rd Gen running iOS 6.1.3 - FREEZING!

I got my app rejected due to this:

"We found that your app exhibited one or more bugs, when reviewed on iPad 3rd Gen. running iOS 6.1.3, on both Wi-Fi and cellular networks, which is not in compliance with the App Store Review Guidelines.

The application remains blank indefinitely.

For discrete code-level questions, you may wish to consult with Apple Developer Technical Support. Please be sure to:

  • include the complete details of your rejection issues
  • prepare any symbolicated crash logs, screenshots, and steps to reproduce the issues for when the DTS engineer follows up. 

For information on how to symbolicate and read a crash log, please see Tech Note TN2151 Understanding and Analyzing iPhone OS Application Crash Reports.

If you have difficulty reproducing this issue, please try testing the workflow as described in <https://developer.apple.com/library/ios/qa/qa1764/>Testing Workflow with Xcode’s Archive feature"."

The strange is that I tested on this device ( iPad 3rd Gen running iOS 6.3.1 ) and it runs perfectly, no error. I tested on Corona simulator and xCode simulator and no error either… I tried to change some parts of code but nothing make it pass on apple process. Resuming I never could reproduce that error and have no idea what is going on! 

Is there any kind of bug on corona related to the iPad 3rd Gen running iOS 6.1.3 ?

The attached file shows that screen freeze in the splash screen on the app…

any ideas??